Interlocking fully metal guided extension table slide



O. AQBEECK July 6, 1954 .INTERLOCKING FULLY METAL GUIDED EXTENSION TABLESLIDE Filed Sept. 15, 1952 INVEN TOR.

OTTO [15.55am BY iLilllll ATT ENE).

Patented July 6, 1954 INTERLOGKING FULLY METAL .GUIDED" 3. Claims;

The present. invention: relates.- to: extension tables and moreespecially to improvements-.inlv

the slides used-:in connection with such tables.

Itis an objectof the present invention to vpro.- Vid&:S1ideS forextension. tables which. have all the advantages. of metal-on-metalslides without:

manufacture than tables having wooden slides.

The slide construction according to the presentiinventionuses theconventional wooden beam to. provide the desiredsupport andcomprisesrelatively smalland light metalslides of a special design attached tothe wooden beams in a manner that does not materially weaken. the

beams. The metal slides according to the invention' arein the form oflight sheet metal rails of" such cross-sectional configuration that theycan be easily and inexpensively manufactured and attached to the woodenbeams. The combination of the conventional wooden beam with the railsaccording to the invention completely eliminates the inconveniencesconnected with conventional wooden slides and caused by swelling,shrinking, and warping of the wood.

Further and other objects of the present invention will be hereinafterset forth in the accompanying specification and claims, and shown in thedrawing which, by way of illustration, shows what I now consider to be apreferred embodiment of my invention.

In the drawing:

Fig. 1 is a vertical cross sectional view of an extension table slidesystem according to the invention, the section being taken along line IIin Figs. 2 and 3;

Fig. 2 is a horizontal sectional view of a portion of the slide systemshown in Fig. l, the sec- 2 having two permanent top sections, one ofwhich" is attached to beam-I and the other tobeam'i; and having-twosupplemental top sectionsadapt-=- ed' to' be" laid between the permanentsectionswhen beams I and-3 havebeen moved=in the di rection-of the-arrowslfl and 2|- in-Figs; 2 and-3': relatively to the stationary beam2; i. e:- when the slide is .fullyextended. The'table topseetions-arenot illustrated becausethey do not form part-of the present-invention;

Each of the slide beams l and 3*l1'as-a-1ong-i tudinal horizontal sawcut 6 and 1; respectively; onthe-side-facing the center-beami. Thelatterhas two' horizontal saw cuts; 8 and 9,- one on each side. The saw:cuts are made-to receive 'hori--- zontal portions of -rails'-'made oflight sheet'metal which will be described later; The horizontalportionsof the rails are-secured *inthesaw-cuts by nails or pins=l5 verticallYdriven into the respective wooden beam and through the hori zontal railportions.

The cross-section of 'a;ll rai1s is -the samea-nd willl'. therefore bedescribed with reference to=rails-5 andS Each-rail has-a-traclr 'portion designated bymumeral it for rail 6 and' w for' rail 8 Thetrackeportions':arebentataright angle with respect to the horizontalrail portions. Each track portion is bent upon itself to produce avertical U-shaped cross-sectional configuration. It will be noted thatall rails used in the new table slides are alike and can be manufacturedcontinuously and cut to the desired length from continuous rail strips.The lastbent portion of one rail closely fits between the legs of the Uformed by the track portion of the adjacent rail.

One end of slide beam I is provided with a short guide rail section 6which runs in a rail 8" which extends from one end to the middle ofcenter beam 2. A rail 6 extends laterally from beam 1 over half of itslength to the other end of the beam. The position of rail 6 with respectto beam l is the same as that of rail section 6'. Rail 6" runs in a railsection 8' extending laterally from the end of center beam 2 distal withrespect to the end from which rail 8 extends. By the aforesaid mean beaml is guided and supported by the center beam 2 if moved half of itslength in the direction of arrow 20.

A short rail section 9' extends laterally, to the right in the viewsshown in the drawing, from one end of center beam 2 for guiding rail 1"extending to the left from one half of the length of beam 3. A rail 8"extends from beam 2 in the same manner as section 9' but from the onehalf of beam 2 which is distal of the end of the beam on which section9' is provided. Rail 9" is guided in a rail section 7' extending fromthe end of beam 3 distal of the end of beam 3 from which rail 7 extends.The arrangement of rail section 9' and rail 9" relatively to rail 7 andsection 7', respectively, is such that beam 3 is positively guided andsupported when moved in the direction of arrow 2! half of its lengthfrom the position shown in Fig. 3.

To limit movement of beam I in the direction of arrow 26, a pin llextends from beam I into a longitudinal groove I! in beam 2 and abutsagainst a pin l9 extending from beam 2 into the groove I! when beam 1 ismoved outward to the full desired extent. For limiting movement in theopposite direction, a pin 22 extends from beam l into groove 11.Similarly, to limit move- 7 ment of beam 3 in the direction of arrow 2|,a pin 23 extends from beam 2 into a groove 24 in beam 3, pin 23 abuttingagainst a pin 25 extendingfrom beam 3 into groove 2'! when beam 3 ispulled out to the desired extent. Movement in the opposite direction islimited by pin 25 abutting against a pin 26 extending from beam 2 intogroove 24 when the relative position of beams 2 and 3 is as shown inFig. 3.

A longitudinal recess and I3 is provided in the sides of beam I and 3,respectively, facing the center beam 2, the latter having longitudinalrecesses l2 and I4 facing recesses HT! and [3, respectively, toaccommodate the track portions of rails 6', 6", 8", 8', and 7', 7", 9,9", respectively.

While I believe the above described embodiment of my invention to be apreferred embodiment, I wish it to be understood that I do not desire tobe limited to the exact details of design and construction shown anddescribed, for obvious modifications will occur to a person skilled inthe art.

I claim:

1. An interlocking fully metal guided extension table slide comprisingat least two juxtapositioned wooden beams having sides facing oneanother, a horizontal longitudinal saw cut in the side of each beamfacing the side of the juxtapositioned beam, and horizontal slide railsmade of sheet metal, each rail having a horizontal portion and avertical track portion extending longitudinally at a right angle fromsaid horizontal portion, said vertical track portion being bent uponitself to form a vertical U-shaped crosssection, the horizontal portionsof said rails being vertically spaced and individually inserted into andimmovably secured in said saw cuts, said vertical track portions ofrails inserted in saw cuts of sides of said beams facing one anotherbeing longitudinally slidably inserted into each other, one leg of theU-shaped cross-section of the track portion of one rail being placedbetween the legs of the U-shaped cross-section of the other rail, thevertical track portion of one of two cooperating slide rails extendingdownwards from the horizontal portion of the same rail and the verticaltrack portion of the other of the two cooperating slide rails extendingup- Wards from the horizontal portion of the other rail.

2. An extension table slide as defined in claim 1, comprising pinsextending vertically through said wooden beams and through thehorizontal portion of said rails to hold the latter in their respectivebeams.

3. An extension table slide as defined in claim 1, comprising oppositelypositioned longitudinal recesses in the sides of the beams facing oneanother, the recess in one beam accommodating the vertical track portionof the rail secured in the other beam.

References Cited in the file of this patent UNITED STATES PATENTS NumberName Date 113,871 Gibbons Apr. 18, 1871 263,055 Moore Aug. 22, 1882265,800 Hall Oct. 10, 1882 402,967 Pratt May 7, 1889 978,730 Gaut Dec.13, 1910 1,053,117 Tyden Feb. 11, 1913 2,000,463 Browne May 7, 19352,293,364 Schigut Aug. 18, 1942

